930  
FZUS51 KBOX 271401  
CWFBOX  
 
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND  
NATIONAL WEATHER SERVICE BOSTON/NORTON MA  
1001 AM EDT WED SEP 27 2023  
 
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT  
TO 25 NM  
 
ANZ200-280300-  
1001 AM EDT WED SEP 27 2023  
   
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
 
 
HIGH PRES NUDGES IN FROM EASTERN CANADA THROUGH THU. A LOW LIFTS  
TOWARD THE SOUTHERN WATERS LATE FRI THROUGH SAT, AND COULD BRING  
RAIN. HIGH PRES BUILDS OVER THE NORTHEAST LATE SAT INTO EARLY NEXT  
WEEK.  
 

 
 
ANZ250-280300-  
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK  
NATIONAL MARINE SANCTUARY-  
1001 AM EDT WED SEP 27 2023  
   
THIS AFTERNOON
 
NE WINDS 5 TO 10 KT. GUSTS UP TO 20 KT. SEAS  
3 TO 4 FT.    
TONIGHT
 
E WINDS 5 TO 10 KT. SEAS 3 TO 4 FT.    
THU
 
NE WINDS 5 TO 10 KT. SEAS AROUND 3 FT.    
THU NIGHT
 
E WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.    
FRI AND FRI NIGHT
 
NE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.    
SAT THROUGH SUN NIGHT
 
NE WINDS 5 TO 10 KT. SEAS 2 TO 4 FT.  
 
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE  
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE  
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.  
 

 
 
ANZ251-280300-  
MASSACHUSETTS BAY AND IPSWICH BAY-  
1001 AM EDT WED SEP 27 2023  
   
THIS AFTERNOON
 
NE WINDS 5 TO 10 KT. GUSTS UP TO 20 KT. SEAS  
2 TO 4 FT.    
TONIGHT
 
E WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.    
THU
 
NE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.    
THU NIGHT
 
E WINDS AROUND 5 KT. SEAS 2 TO 3 FT.    
FRI AND FRI NIGHT
 
NE WINDS 5 TO 10 KT. SEAS AROUND 2 FT.    
SAT THROUGH SUN NIGHT
 
N WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.  
 
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE  
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE  
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.  
 

 
 
ANZ231-280300-  
CAPE COD BAY-  
1001 AM EDT WED SEP 27 2023  
   
THIS AFTERNOON
 
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.  
SEAS 2 TO 3 FT.    
TONIGHT
 
NE WINDS 5 TO 10 KT. SEAS AROUND 2 FT.    
THU
 
E WINDS 5 TO 10 KT. SEAS AROUND 2 FT.    
THU NIGHT
 
E WINDS 5 TO 10 KT. SEAS AROUND 2 FT.    
FRI
 
E WINDS 5 TO 10 KT. SEAS AROUND 2 FT.    
FRI NIGHT
 
E WINDS 5 TO 10 KT. SEAS AROUND 2 FT. A CHANCE OF  
RAIN.    
SAT
 
NE WINDS 10 TO 15 KT. SEAS AROUND 2 FT. A CHANCE OF RAIN.    
SAT NIGHT THROUGH SUN NIGHT
 
NE WINDS 5 TO 10 KT. SEAS AROUND  
2 FT.  
 
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE  
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE  
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.  
 

 
 
ANZ254-280300-  
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA  
OUT 20 NM-  
1001 AM EDT WED SEP 27 2023  
   
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY AFTERNOON
 
 
   
THIS AFTERNOON
 
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.  
SEAS 4 TO 5 FT.    
TONIGHT
 
E WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE EVENING.  
SEAS 3 TO 5 FT.    
THU
 
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.    
THU NIGHT
 
E WINDS 5 TO 10 KT. SEAS 3 TO 4 FT.    
FRI
 
E WINDS AROUND 10 KT. SEAS 3 TO 4 FT.    
FRI NIGHT
 
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. A CHANCE OF  
RAIN.    
SAT THROUGH SUN NIGHT
 
NE WINDS 10 TO 15 KT WITH GUSTS UP TO  
20 KT. SEAS 3 TO 5 FT.  
 
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE  
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE  
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.  
 

 
 
ANZ255-280300-  
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD  
AND NANTUCKET-  
1001 AM EDT WED SEP 27 2023  
   
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING
 
 
   
THIS AFTERNOON
 
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.  
SEAS 4 TO 6 FT.    
TONIGHT
 
E WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE EVENING.  
SEAS 3 TO 5 FT.    
THU
 
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
THU NIGHT
 
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.    
FRI AND FRI NIGHT
 
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.  
SEAS 3 TO 5 FT. A CHANCE OF RAIN.    
SAT
 
NE WINDS 15 TO 20 KT. SEAS 3 TO 5 FT. A CHANCE OF RAIN.    
SAT NIGHT THROUGH SUN NIGHT
 
NE WINDS 10 TO 15 KT WITH GUSTS UP  
TO 20 KT. SEAS 3 TO 5 FT.  
 
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE  
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE  
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.  
 

 
 
ANZ256-280300-  
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT  
TO 20 NM SOUTH OF BLOCK ISLAND-  
1001 AM EDT WED SEP 27 2023  
   
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING
 
 
   
THIS AFTERNOON
 
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.  
SEAS 4 TO 6 FT.    
TONIGHT
 
E WINDS 10 TO 15 KT. GUSTS UP TO 25 KT IN THE EVENING.  
SEAS 4 TO 5 FT.    
THU
 
E WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 4 TO  
5 FT.    
THU NIGHT
 
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
FRI AND FRI NIGHT
 
NE WINDS AROUND 15 KT WITH GUSTS UP TO  
20 KT. SEAS 3 TO 5 FT. A CHANCE OF RAIN.    
SAT
 
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 4 TO  
5 FT. A CHANCE OF RAIN.    
SAT NIGHT THROUGH SUN NIGHT
 
NE WINDS 10 TO 15 KT WITH GUSTS UP  
TO 20 KT. SEAS 4 TO 5 FT.  
 
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE  
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE  
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.  
 

 
 
ANZ232-280300-  
NANTUCKET SOUND-  
1001 AM EDT WED SEP 27 2023  
   
THIS AFTERNOON
 
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.  
SEAS 2 TO 3 FT.    
TONIGHT
 
E WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE EVENING.  
SEAS 2 TO 3 FT.    
THU
 
E WINDS 10 TO 15 KT. SEAS 2 TO 3 FT.    
THU NIGHT
 
E WINDS AROUND 10 KT. SEAS 2 TO 3 FT.    
FRI
 
E WINDS AROUND 10 KT. SEAS AROUND 2 FT.    
FRI NIGHT
 
NE WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. A CHANCE OF  
RAIN.    
SAT
 
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO  
3 FT. A CHANCE OF RAIN.    
SAT NIGHT THROUGH SUN NIGHT
 
NE WINDS 10 TO 15 KT WITH GUSTS UP  
TO 20 KT. SEAS 2 TO 3 FT.  
 
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE  
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE  
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.  
 

 
 
ANZ233-280300-  
VINEYARD SOUND-  
1001 AM EDT WED SEP 27 2023  
   
THIS AFTERNOON
 
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.  
SEAS AROUND 2 FT.    
TONIGHT
 
NE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE  
EVENING. SEAS AROUND 2 FT.    
THU
 
E WINDS AROUND 10 KT. SEAS AROUND 2 FT.    
THU NIGHT
 
E WINDS 5 TO 10 KT. SEAS AROUND 2 FT.    
FRI AND FRI NIGHT
 
NE WINDS 10 TO 15 KT. SEAS AROUND 2 FT. A  
CHANCE OF RAIN.    
SAT
 
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS AROUND  
2 FT. A CHANCE OF RAIN.    
SAT NIGHT THROUGH SUN NIGHT
 
NE WINDS 10 TO 15 KT. SEAS 2 TO  
3 FT.  
 
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE  
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE  
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.  
 

 
 
ANZ234-280300-  
BUZZARDS BAY-  
1001 AM EDT WED SEP 27 2023  
   
THIS AFTERNOON
 
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.  
SEAS AROUND 2 FT.    
TONIGHT
 
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,  
DIMINISHING TO 5 TO 10 KT AFTER MIDNIGHT. SEAS AROUND 2 FT.    
THU
 
NE WINDS 5 TO 10 KT. SEAS AROUND 2 FT.    
THU NIGHT
 
E WINDS 5 TO 10 KT. SEAS AROUND 2 FT.    
FRI AND FRI NIGHT
 
NE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. A  
CHANCE OF RAIN.    
SAT
 
NE WINDS 10 TO 15 KT. SEAS AROUND 2 FT. A CHANCE OF RAIN.    
SAT NIGHT THROUGH SUN NIGHT
 
NE WINDS 10 TO 15 KT. SEAS AROUND  
2 FT.  
 
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE  
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE  
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.  
 

 
 
ANZ235-280300-  
RHODE ISLAND SOUND-  
1001 AM EDT WED SEP 27 2023  
   
THIS AFTERNOON
 
NE WINDS AROUND 15 KT WITH GUSTS UP TO 20 KT.  
SEAS 3 TO 4 FT.    
TONIGHT
 
NE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE  
EVENING. SEAS 2 TO 4 FT.    
THU
 
NE WINDS 10 TO 15 KT. SEAS 2 TO 3 FT.    
THU NIGHT
 
E WINDS 10 TO 15 KT. SEAS 2 TO 3 FT.    
FRI AND FRI NIGHT
 
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.  
SEAS 2 TO 4 FT. A CHANCE OF RAIN.    
SAT
 
NE WINDS AROUND 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO  
4 FT. A CHANCE OF RAIN.    
SAT NIGHT THROUGH SUN NIGHT
 
NE WINDS 10 TO 15 KT WITH GUSTS UP  
TO 20 KT. SEAS 3 TO 4 FT.  
 
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE  
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE  
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.  
 

 
 
ANZ237-280300-  
BLOCK ISLAND SOUND-  
1001 AM EDT WED SEP 27 2023  
   
THIS AFTERNOON
 
NE WINDS AROUND 15 KT WITH GUSTS UP TO 20 KT.  
SEAS 3 TO 4 FT.    
TONIGHT
 
NE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE  
EVENING. SEAS 2 TO 4 FT.    
THU
 
NE WINDS 10 TO 15 KT. SEAS 2 TO 4 FT.    
THU NIGHT
 
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.    
FRI AND FRI NIGHT
 
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.  
SEAS 3 TO 4 FT. A CHANCE OF RAIN.    
SAT
 
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO  
4 FT. A CHANCE OF RAIN.    
SAT NIGHT THROUGH SUN NIGHT
 
NE WINDS 10 TO 15 KT WITH GUSTS UP  
TO 20 KT. SEAS 3 TO 4 FT.  
 
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE  
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE  
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.  
 

 
 
ANZ230-280300-  
BOSTON HARBOR-  
1001 AM EDT WED SEP 27 2023  
   
THIS AFTERNOON
 
NE WINDS AROUND 10 KT. WAVES 1 FOOT OR LESS.    
TONIGHT
 
NE WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.    
THU
 
NE WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.    
THU NIGHT
 
E WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.   
FRI AND FRI NIGHT
 
NE WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.    
SAT THROUGH SUN NIGHT
 
NW WINDS 5 TO 10 KT.  
 
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE  
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE  
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.  
 

 
 
ANZ236-280300-  
NARRAGANSETT BAY-  
1001 AM EDT WED SEP 27 2023  
   
THIS AFTERNOON
 
NE WINDS AROUND 10 KT WITH GUSTS UP TO 20 KT.  
WAVES 2 TO 3 FT.    
TONIGHT
 
NE WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE EVENING.  
WAVES 2 TO 3 FT.    
THU
 
NE WINDS 5 TO 10 KT. WAVES AROUND 2 FT.    
THU NIGHT
 
NE WINDS 5 TO 10 KT. WAVES 2 TO 3 FT.    
FRI AND FRI NIGHT
 
NE WINDS 5 TO 10 KT. WAVES 2 TO 3 FT. A  
CHANCE OF RAIN.    
SAT
 
NE WINDS AROUND 10 KT. A CHANCE OF RAIN.    
SAT NIGHT THROUGH SUN NIGHT
 
NE WINDS 5 TO 10 KT.  
 
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE  
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE  
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.  
 

 
 
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